1 files changed, 57 insertions, 0 deletions
diff --git a/subversion/bindings/javahl/src/org/apache/subversion/javahl/util/TunnelChannel.java b/subversion/bindings/javahl/src/org/apache/subversion/javahl/util/TunnelChannel.java
new file mode 100644
index 0000000..933d883
--- /dev/null
+++ b/subversion/bindings/javahl/src/org/apache/subversion/javahl/util/TunnelChannel.java
@@ -0,0 +1,57 @@
+/**
+ * @copyright
+ * ====================================================================
+ *    Licensed to the Apache Software Foundation (ASF) under one
+ *    or more contributor license agreements.  See the NOTICE file
+ *    distributed with this work for additional information
+ *    regarding copyright ownership.  The ASF licenses this file
+ *    to you under the Apache License, Version 2.0 (the
+ *    "License"); you may not use this file except in compliance
+ *    with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing,
+ *    software distributed under the License is distributed on an
+ *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *    KIND, either express or implied.  See the License for the
+ *    specific language governing permissions and limitations
+ *    under the License.
+ * ====================================================================
+ * @endcopyright
+ */
+
+package org.apache.subversion.javahl.util;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.Channel;
+import java.util.concurrent.atomic.AtomicLong;
+
+/* The following channel subclasses are used by the native
+   implementation of the tunnel management code. */
+
+abstract class TunnelChannel implements Channel
+{
+    protected TunnelChannel(long nativeChannel)
+    {
+        this.nativeChannel = new AtomicLong(nativeChannel);
+    }
+
+    public boolean isOpen()
+    {
+        return (nativeChannel.get() != 0);
+    }
+
+    public void close() throws IOException
+    {
+        long channel = nativeChannel.getAndSet(0);
+        if (channel != 0)
+            nativeClose(channel);
+    }
+
+    private native static void nativeClose(long nativeChannel)
+        throws IOException;
+
+    protected AtomicLong nativeChannel;
+}